.\" Copyright (c) 2002 Nicolas Souchu
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.Dd April 20, 2002
.Dt VIAPM 4
.Os
.Sh NAME
.Nm viapm
.Nd VIA chipsets Power Management controller driver
.Sh SYNOPSIS
.Cd device iicbb
.Cd device iicbus
.Cd device iicsmb
.Cd device smbus
.Cd device smb
.Cd device viapm
.Sh DESCRIPTION
This driver provides access to the
.Tn "VIA chipset Power Management Unit"
family.
They are
VT82C586B, VT82C596A, VT82C596B, VT82C686A and VT8233.
.Pp
The embedded controller of the VIA chipset may give you access
to the monitoring facilities of your mainboard.
.Pp
The 586B support is made by software whereas other controllers support
the SMBus protocol by hardware.
See
.Xr smb 4
for writing user code to fetch voltages, temperature and so on from the
monitoring chip of your mainboard.
.Sh SEE ALSO
.Xr iicbb 4 ,
.Xr iicbus 4 ,
.Xr iicsmb 4 ,
.Xr smb 4 ,
.Xr smbus 4
.Sh HISTORY
The
.Nm
manual page first appeared in
.Fx 4.5 .
.Sh AUTHORS
This
manual page was written by
.An Nicolas Souchu Aq Mt nsouch@FreeBSD.org .
.Sh BUGS
Only polling mode is supported.
